unit1 great scientists[上学期]
文档属性
| 名称 | unit1 great scientists[上学期] |  | |
| 格式 | rar | ||
| 文件大小 | 997.7KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2006-09-05 00:26:00 | ||
图片预览
文档简介
课件24张PPT。Unit 1Great scientists1.Which scientist discovered that objects in water are lifted up by a force that helps them float?B. ArchimedesC. Thomas EdisonA. Charles Darwin2. Who wrote a book explaining how animals and plants developed as the environment changed?A. Marie CurieC. Charles DarwinB. Gregor Mendel3.Who invented the first steam engine?A. Thomas NewcomenC. Thomas EdisonB. Archimedes4. Who used peas to show how physical characteristics are passed from parents to their children.A. Thomas EdisonC. ArchimedesB. Gregor Mendel5. Who discovered radium?A. Marie CurieC. NewtonB. Zhang Heng6.Who invented the way of giving electricity to everybody in large cities?A. Stephen Hawking C. Thomas EdisonB. Archimedes7.Who was the painter that studied dead bodies to improve his painting of people?A. Gregor MendelC. Marie CurieB. Leonardo da Vinci 8. Who invented a lamp to keep miners safe underground?A. Sir Humphry Davy C. FaradayB. Thomas Newcomen9. Who invented the earliest instrument to tell people where earthquakes happened?A. Charles DarwinC. Watt B. Zhang Heng10.Who put forward a theory about black holes?A. Stephen HawkingC. CopernicusB. ArchimedesWarming upWhat impress you most in 2003?Which person impress you most during the SARS?What other infectious diseases do you know?For example: When you eat some seafood……You feel……Maybe you have got ________.CholeraCholera infects people’s intestines, causing diarrhea, vomiting and leg cramps.John Snow defeats “King cholera”ReadingSkimming: answer the following questions:What are the two theories John Snow got interested in?
What did John Snow’ experience show?
How to prevent the disease happening again?1.The two theories are : The first suggested that cholera multiplied in the air without reason. The second suggested that people absorbed this disease into their bodies with their meals.3.To prevent this from happening again, John Snow suggested that the source of all water supplies be examined and new methods of dealing with polluted water be found.2.John Snow had shown that cholera was spread by germs and not in a cloud of gas. Keys: the cause of the serious disease of cholera. ________________________ that attacked victims____________from the next cholera attack to test theories. Try to prove which method was correct.He found the cause of cholera was____________________._______. Because the data showed a connection with the water.John Snow was able to ___________ once its cause was known.No body knew___________________Strange cloud in the airwith their mealsCollect datathe polluted waterdefeat choleraIdea 2Discussion: Discuss the following questions in groups of four.1.2.3.Cholera was a 19th century disease. What disease do you think is similar to cholera today?John Snow believed Idea 2 was right. How did he finally prove it?Do you think John Snow would have solved this problem with- out the map? Give a reason. Two diseases, which are similar today, are SARS and AIDS because they are both very serious, have an unknown cause and public health care to solve them. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.Keys1.2. No. The map helped John Snow organise his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3.Let’s have a competition!ExtensionSpeaking activityDiscuss in groups of four, which field do you want to contribute yourself to in the future? One takes down the groupmates’ opinions, after that ,report the groupmates’ opinions to the whole class.
What did John Snow’ experience show?
How to prevent the disease happening again?1.The two theories are : The first suggested that cholera multiplied in the air without reason. The second suggested that people absorbed this disease into their bodies with their meals.3.To prevent this from happening again, John Snow suggested that the source of all water supplies be examined and new methods of dealing with polluted water be found.2.John Snow had shown that cholera was spread by germs and not in a cloud of gas. Keys: the cause of the serious disease of cholera. ________________________ that attacked victims____________from the next cholera attack to test theories. Try to prove which method was correct.He found the cause of cholera was____________________._______. Because the data showed a connection with the water.John Snow was able to ___________ once its cause was known.No body knew___________________Strange cloud in the airwith their mealsCollect datathe polluted waterdefeat choleraIdea 2Discussion: Discuss the following questions in groups of four.1.2.3.Cholera was a 19th century disease. What disease do you think is similar to cholera today?John Snow believed Idea 2 was right. How did he finally prove it?Do you think John Snow would have solved this problem with- out the map? Give a reason. Two diseases, which are similar today, are SARS and AIDS because they are both very serious, have an unknown cause and public health care to solve them. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.Keys1.2. No. The map helped John Snow organise his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3.Let’s have a competition!ExtensionSpeaking activityDiscuss in groups of four, which field do you want to contribute yourself to in the future? One takes down the groupmates’ opinions, after that ,report the groupmates’ opinions to the whole class.